Teredo-proof covering for piles



`No. 403.409.- Patented May 14 1889.

UNITED STATES PATENT OFFICEO GEORGE M. BARONIDIS, OF SAN FRANCISCO, CALIFORNIA.

TEREDO-PROOF COVERING FOR PILES.

SPECIFICATION forming part of Letters Patent No. 403,409, dated May 14, 1889.

Application filed May 3,1888. Serial No. 272,703. (No model.)

To all whom, it may concern:

Be it known that I, GEORGE M. BARONIDIS, a citizen of the United States, residingin the city and county of San Francisco, and State of California, have invented certain new and useful Improvements in Teredo-Proof Covering for Piles; and I do hereby declare that the following is a full, clear, and exact description of my said invention, reference being had to the drawings that accompany and form part of this specification.

My invention relates to an improved coverin g and protection for piles and other like submarne structures, to prevent their destruction by the teredo and other agencies that attack wooden structures of such kind in many localities; and it consists in the production of a covering and armor and its application to the pile, as lereinafter described, by which l obtain an indestructible and enduring protector that is perfectly impervious to the attacks of marine animals.

My invention consists in the production of a covering composed of an inner layer or wrapping of a teredo-proof composition and an outer arnor orprotector of metal, by which the composition is prevented from being broken, torn off, or otherwise destroyed, so as to eXpose the pile.

The following description fully explains the manner in which I proceed to make and compound the inner layer of the covering and to form and apply the outer protection, theaccompanying drawings being referred to by figures and letters.

Fi gure l represents a pile with my improved covering applied to it. Fig. 2 is a View on a larger scale, with a portion of the outermetal and the inner composition broken away. Fig. 3 is a similar view of a portion of a pile and its coverng, showing more particularly the clamps and fastenings to hold the metal protector in place. Fig. et is a cross -section through the pile and oovering. Figs. 5 and 6 are detail views of another form of joint for fixing the metal covering. Fig. 7 is a detail View of the mode of fixing the lower end of the protector at the bottom of the pile.

Similar letters of reference indicate corresponding parts in all the figures of the drawngs.

The inner layer or wrapping of the protector is formed of the following composition: NVhale oil, tWo gallons or sixteen pounds; coal-tar, one gallon or eight pounds; pitchpine tar, two quarts or four pounds; rosin, ten pounds; asphaltum, fifteen pounds; asbestus fiber, pulverized, twenty pounds; wool, short, twelve pounds; cow-hair, fifteen pounds. These ingredients are thoroughly mixed, and the liquid is drawn off from the top and the solid matter is squeezed and pressed out into a mat or sheet of suitable thickness. The resulting liquid is then utilized for coating or painting the surface of the pile preparatory to the wrapping or layer of the composition being applied, it being understood that the bark is previously removed from the pile where the protector is to be Secured.

After coating the pile with the atoresaid liquid residue the layer of the composition is wrapped around it for the required length, and a sheathing or protecting cover of netal is placed and securely fastened over it. This metallic protection is formed of sheet metal, either in a single length to incase the entire composition from top to bottom, or in sections of convenient length and of such width that sufficient metal is afforded at the edges after wrapping to secure the covering by a suitable joint. Additional strength and security are obtained in such fastening by placing clamping rings or bands over the metal cover and drawing them together by means of bolts and nuts.

The mode of fastening the metal at the edges may be either by a fiange-joint and rivets, staples, or bolts, or by a double-lapped joint, E. Both modes of uniting the edges of the metal are shown in the drawings. The clamping-bands can be made in one solid piece of sheet metal, or they can be cut away in the middle for the sake of lightness. Openings can be cut, also, through the covering at such points where it is necessary to mortise into the pile for stringers or beams. Before the joints are brought together and closed tightly a packing, P, of lead or similar substance, is set in the joint, and also around the top and the bottom edges to cover and protect the composition that would be otherwise exposed.

The sheetmetal cover-ing is stamped or IOO 2 i 4o3,4o9

spun withbeads 3 and depressions 4 at intervals of space apart to hold the composition. These grip and prevent the inner Wrapping from shifting or becoming displaced, and secure a firm union of the outer and inner parts of the protection. v

In the several figures of the drawings, A is the pile. B is the layer or thickness of the composition applied next to the surface of the pile, and C is the outer metal covering.

D D are the clamping-bands, placed at intervals apart in the length of the pile.

O is the fiange-joint, and 1, 2, and 5 th fastenings. i

The double -lapped joint E is formed, as clearly shown in Figs.- 5 and 6, by turning over the edges of the metal upon themselves and bendingit down. The clamps D may have cut-away portions D The metal covering is formed With beads 3 and 4, and Where short lengths are used the clamps D can be placed over the joints When they are set together.

At the bottom end of the covering a ferrule of thick metal, X, is set under the end of the cover C, and is firnly Secured to the pile by spikes or nails, to hold the protection from being forced down or displaced during the operation of driving the pile.

Having thus fnlly described my saidinven and secured by joints and clamps, as described.

3. In combination With a ple or smlar structure to be protected, the inner coverng of composition produced from the hereinbefore-described ingredients, the outer protecti-ng-covering of metal, the clamps, and the,`

feri-ule or stop at the bottom, substantially as hereinbefore described. V r

In testimony that I claim the foregoing I have hereunto set-my hand and seal.

GEORGE M. BARONIDIS.

Witnesses:

CHAs. D. WHEAT, C. W. M. SMITH. 

